21z-(15z-10)=

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Solution for 21z-(15z-10)= equation:


Simplifying
21z + -1(15z + -10) = 0

Reorder the terms:
21z + -1(-10 + 15z) = 0
21z + (-10 * -1 + 15z * -1) = 0
21z + (10 + -15z) = 0

Reorder the terms:
10 + 21z + -15z = 0

Combine like terms: 21z + -15z = 6z
10 + 6z = 0

Solving
10 + 6z = 0

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-10' to each side of the equation.
10 + -10 + 6z = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 6z = 0 + -10
6z = 0 + -10

Combine like terms: 0 + -10 = -10
6z = -10

Divide each side by '6'.
z = -1.666666667

Simplifying
z = -1.666666667

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